Spray nozzle



Sept. 9, 1924. 1,508,281

C. KELLY SPRAY NOZZLE Filed April 10. 1920 Inv ew%0r: Charis-8K1? 3?,

Patented Sept. 9, 1924. l I l I j i UNITED. STATES PATENT OFFICE.

CHARLES KELLY, or BO TON, MASSACHUSETTS, ASSIGNOR To SPRAY ENGINEER: IIN'G COMPANY, OE BOSTON, MASSACHUSETTS, A CORPORATION F MASSACHUSETTS.

SPRAY" NOZZLE.

Z '0 all whom it may Concern:

Be it known that I, CHARLES KELLY, a citizen of the United States, and a resident of Boston, in the county of Sufiolk and State of Massachusetts, have invented an Improvem'ent'in Spray Nozzles, of which the follow- 1 ing description, in connectionwith the accompanying drawings, is a specification, like characters on the drawings representing like parts. Y

This invention relates to fluid spray nozzles of general application for distributing fluid preferably in liquidform.

In order that the principle of the invention may readily be understood, I have in the accompanying drawing disclosed a single type of spray nozzle embodying my inven- E1011. 7

In the drawing,

Fig. l is a Vertical central section of a spray nozzle constructed in accordance with my invention, and by which the method of my invention may be practised; and

Fig. 2 is a horizontal or transverse section upon the line 2-201? Fig. 1 and looking downward in said figure.

I By the nozzle herein disclosed and in accordance with and in carrying out my invention, I form and distribute over preferably an extended area, a spray composed of or comprising water or other liquid or suitable fluid, and which is, in the most effective embodiment thereof, of substantially uniform homogeneity throughout. 'Such' spray is capable of use inmany and varied relations. Among other uses, to which I am in no wise limited in the practice of my invention, I may enumerate the following: for aerating municipal and other water supplies in reservoirs and other places; in connection with cooling ponds to spray the water heated in condensers of turbine or other engines, for

spraying efliuent in connection with sprin- A kling filter beds for precipitating coal dust; for air washing; for condensing vapors; for humidifying air in chemical plants and in cotton mills, for oil burners, fire extinguishers, and in fact for many other uses not herein necessary to enumerate.

In carrying out my invention, I project the fluid, of whatever nature, in a flaring spray and I preferably simultaneously produce an inner jet and one or more outer jets that are introduced along inwardly directed paths or lines which desirably are inclined or curved so as to enter a mixing chamber and there-mix, mingle orblend with the said" innerjet.--- Preferably the inner jet'is a central one and desirably it is a truly axial one, and it may b'e either non-rotary or rotary' as dedesired". -Desirably the inwardly directed outer or surrounding jets. enter "the mixing chamber in paths that arein substantially a A single' horizontal plane. Desirably theliquid is entered, into the nozzle in a singleastream whi'cl'r'is subdivided so as to produce the inner'jet and the outer inwardly directed jet or jets, butwithin the scope of my invention, Q,

I may'sep'a'rtttely introduce the inner j'etand' the Outer jet or jets as by providing separate' "pipes or passages and thus" provide fOr-u's'inga plurality of different initial streams.

-- Inth'atembodiment of the nozzle of my invention herein selected for illustration and by which I, may practice my invention, the

nozzle comprises an outer shell or casing 1 formed as*a-rpipe of'standard size having suitably applied thereto a. terminal member '2 here shown-as exteriorly threaded at 3 and received" b ftl'ie threaded portion 4 'ofthe "shell o'rj casing 1. The terminal member 2 may desired be threaded. or otherwise mounted upon the outer surface of the shell orcas'rng- 1 incwhichcaseit would be pro- VidBd with an end part and adepending flange preferably interiorly threaded.

" 'Within the terminal member 2 I provide a siutable mixing chamber 5 which, if desired, v9O may be-formed in a separate piece that is inserted" in .or attached to the terminal mem- A ber 2. For cheapness of construction, however, I preferably form the mixing chamber p 5 in the terminal member 2 as most clearly indicated in Fig. 1. The mixing chamber 5 may be of any suitable shape and desirably "of the formindicated in Fig. 1,.and is provided' with a base 6 desirably integral with lithe terminal, memberQand'having therein anopening or passage 7' preferably central 01" axial with respectto the mixingchamber .5. A

In the wall ofthe mixing chamber 5' at a suitable poi'nt'and preferably'at or'close to the base 6 I provide one or more, and preferably a series, of inwardly directed passages 8 here shown asthree in number, but which may be ofany desired number. Desirably the openings 8 are'all in substantially the 1710 same plane and herein a horizontal plane, and the said openings 8,, constituting passages of any desired length, maybe curved as indicated or may be straight and in the latter case they are desirably inclined, but within the scope of my invention may be radial. I have, however, produced the best results by employing openings or passages which are not radial, but which introduce the liquid in more tan ential direction.

Desirably I guide or directthe liquid to the openings or passages 8, and herein 1 accomplish this result by concavingthe lower end of the terminal member 2, as indieated The streams or 'ets of li uid enterin the lIllXlllg chamber 5 through, the openii ,8,

from hatever source,-mingle With, the jet.- or stream entering thi 'ough -tlie passage orv opening 7, and severalstreams become thoroughly mixed in the chamber 5 and issue. therefrom m a spray that s-ot substantially uniform homogeneity throughout,

' The jet or jets entering through the pas-- sages v8 partake of a whirling or .rotary motion, andlwere the central or inner jet not present, the said jets entering through the passages 8 Wouldissue from the outlet 10in a substantially hollow spray or cone. The inner or central jet or stream, however, so mixes With'the jets entering through the passages 8 as to result, as stated, in a cone or spray of substantially uniform homogeneity.

' Having thus described certain illustrative embodimentS of my invention, desire it to :be understood that although specific terms are employed, they areusedjin a generic and descriptive sense and not for purposes of limitation, the scope of theinvention being set forth in the following,claims.

l. A spray nozzle comprising a shell-or casing l and a single member received Within said shell or casing and having formed therein a mixing chamber having an inlet for a circumferential series of inletsi'or a pluralityof streams, and. an outlet, said single member being shaped to direct the liquid to said inlets and constituting the only formation for directing liquid to said inlets.

2. A spray nozzle comprising a shell or casing'l, a unitary terminal member inserted in the shell or casing, said terminal member having formed therein a mixing chamber having outwardly convergingside walls, said chamber being provided near one end With a series of circumferential inlets for the liquid and atits oppositeend With a single outlet, said terminal membenbeingshaped ,easin havin a mixin chamber at its inner end to direct the liquid to said circumferential inlets.

and length provided with an interior thread at one end, a terminal member 2 threaded .into said shell or casing and terminating flush With the outer end of the latter, said terminal member having a mixing chamber formed integrally therewith and provided With a surrounding series of inwardly directed inlet ports and an axialinlet port for the liquid and a single outlet port for the liquic a A sp ay n zz e eempris ng she l casin havin a member a lied thereto rovided with a mixing chamber having side .inletsand a substantially anial inlet, the ine d of th member b ing nclined from its outer surface inwardly and extending un n rupt d y 0 a d sid inl s 8,9 as t r ct o gu d h iquid Wi v10st obs ructio thereto.

A sp ay n z l omprising a s el casing, a member applied to shell or 1 i r de w th an ial n e and: a u euild m, of substantially radiating inlets, the inner end of the member being incl ned from its outer surface inwardly tosaid substantially radiating inlet members to direct the liquid Without obstruction thereto.

6. A spray nozzle comprising a pipe of standard size and uniform diameter throughout having a threaded end, an integrally formed terminal member applied .to said threaded end, and an elongated mixingchamber formed Wholly in sa d plug or cap and provided with a circumferential end series oif'inlets. and an outlet, the inn .of said terminal member having a laterally end of the latter, said member having there- 111 a mixing chamber provlded w th an axial inlet, a surrounding series of side inlets and a s ngle outlet, the nner end of said member .being'inclined from its outer surface in- -Wardly and terminating in the transverse pla containing said side inlets to direct the liquid unobstructedly thereto.

In testimony whereof, I have signed my name to this specification.

ones-Les. KELLY- 

